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feat(i18n): add Traditional Chinese (zh-TW) UI locale #10604

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feat(i18n): add Traditional Chinese (zh-TW) UI locale #10604

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880b621
feat(i18n): add Traditional Chinese (zh-TW) UI locale (#10592)
innocarpe Jul 25, 2026
4d5d9d2
fix(i18n): Taiwan terminology and core zh-TW leftovers
innocarpe Jul 26, 2026
c7f1723
fix(i18n): translate zh-TW core UI fallbacks
innocarpe Aug 12, 2026
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3 changes: 2 additions & 1 deletion src/main/i18n/main-i18n.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,8 @@ const LAZY_LOCALE_LOADERS: Record<
es: () => import('../../renderer/src/i18n/locales/es.json'),
ja: () => import('../../renderer/src/i18n/locales/ja.json'),
ko: () => import('../../renderer/src/i18n/locales/ko.json'),
zh: () => import('../../renderer/src/i18n/locales/zh.json')
zh: () => import('../../renderer/src/i18n/locales/zh.json'),
'zh-TW': () => import('../../renderer/src/i18n/locales/zh-TW.json')
}

const lazyLocaleBackend: BackendModule = {
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3 changes: 3 additions & 0 deletions src/renderer/src/components/settings/appearance-search.ts
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Expand Up @@ -47,6 +47,7 @@ export const getLanguageEntries = createLocalizedCatalog((): SettingsSearchEntry
...translateSearchKeyword('settings.appearance.language.system', 'System'),
...translateSearchKeyword('settings.appearance.language.english', 'English'),
...translateSearchKeyword('settings.appearance.language.chinese', '中文（简体）'),
...translateSearchKeyword('settings.appearance.language.chineseTraditional', '中文（繁體）'),
...translateSearchKeyword('settings.appearance.language.korean', '한국어'),
...translateSearchKeyword('settings.appearance.language.japanese', '日本語'),
...translateSearchKeyword('settings.appearance.language.spanish', 'Español'),
Expand All @@ -55,6 +56,8 @@ export const getLanguageEntries = createLocalizedCatalog((): SettingsSearchEntry
// switch to) their language whatever the current interface locale is.
'语言', // Chinese (Simplified)
'語言', // Chinese (Traditional)
'繁體', // Traditional Chinese script name
'简体', // Simplified Chinese script name
'언어', // Korean
'言語', // Japanese
'Idioma', // Spanish
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15 changes: 8 additions & 7 deletions src/renderer/src/i18n/i18n.ts
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Expand Up @@ -15,20 +15,21 @@ import type { PluginLanguagePackRegistration } from '../../../shared/plugins/plu

export const i18n: I18nInstance = i18next.createInstance()

// Why: only the English catalog is bundled eagerly. The other four locales add
// ~2MB to the renderer's startup chunk (parsed on every launch) even though the
// app always boots in English and only switches after the persisted UI language
// loads. A lazy backend fetches each non-English catalog on demand, so any
// changeLanguage() call (UI switch or test) transparently loads its bundle
// instead of paying the parse cost at cold start.
// Why: only the English catalog is bundled eagerly. The other non-default
// locales add multiple MB to the renderer's startup chunk (parsed on every
// launch) even though the app always boots in English and only switches after
// the persisted UI language loads. A lazy backend fetches each non-English
// catalog on demand, so any changeLanguage() call (UI switch or test)
// transparently loads its bundle instead of paying the parse cost at cold start.
const NON_DEFAULT_LOCALE_LOADERS: Record<
Exclude<SupportedUiLocale, 'en'>,
() => Promise<{ default: Record<string, unknown> }>
> = {
es: () => import('./locales/es.json'),
ja: () => import('./locales/ja.json'),
ko: () => import('./locales/ko.json'),
zh: () => import('./locales/zh.json')
zh: () => import('./locales/zh.json'),
'zh-TW': () => import('./locales/zh-TW.json')
}

const lazyLocaleBackend: BackendModule = {
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1 change: 1 addition & 0 deletions src/renderer/src/i18n/locales/en.json
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Expand Up @@ -45,6 +45,7 @@
"system": "System",
"english": "English",
"chinese": "中文（简体）",
"chineseTraditional": "中文（繁體）",
"korean": "한국어",
"japanese": "日本語",
"spanish": "Español"
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1 change: 1 addition & 0 deletions src/renderer/src/i18n/locales/es.json
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Expand Up @@ -18,6 +18,7 @@
"system": "Sistema",
"english": "Inglés",
"chinese": "中文（简体）",
"chineseTraditional": "中文（繁體）",
"korean": "한국어",
"japanese": "日本語",
"spanish": "Español"
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1 change: 1 addition & 0 deletions src/renderer/src/i18n/locales/ja.json
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Expand Up @@ -18,6 +18,7 @@
"system": "システム",
"english": "English",
"chinese": "中文（简体）",
"chineseTraditional": "中文（繁體）",
"korean": "한국어",
"japanese": "日本語",
"spanish": "Español"
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1 change: 1 addition & 0 deletions src/renderer/src/i18n/locales/ko.json
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Expand Up @@ -18,6 +18,7 @@
"system": "시스템",
"english": "English",
"chinese": "中文（简体）",
"chineseTraditional": "中文（繁體）",
"korean": "한국어",
"japanese": "日本語",
"spanish": "Español"
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